在当今数字化时代，服务器之间的通信已经变得非常常见。阿里云服务器与本地服务器之间的ssh连接，可以帮助我们实现文件的远程传输，同时也能实现远程管理和调试。本文将详细介绍如何通过SSH连接阿里云服务器和本地服务器。

一、安装SSH工具

在连接阿里云服务器和本地服务器之前，我们需要在本地服务器上安装SSH工具。对于windows用户，可以使用PuTTY工具；对于Mac用户，可以使用Mac自带的Terminal工具；对于linux用户，可以直接使用Linux的SSH工具。

二、配置阿里云服务器

在安装好SSH工具后，我们需要在阿里云服务器上配置SSH服务。登录阿里云服务器，找到并运行以下命令：

bash sudo nano /etc/ssh/sshd_config

在打开的配置文件中，找到并修改以下内容：

```bash

开启SSH服务

HosTKEyAlGorithms ssh-rsa,rsa-sha2-512,ssh-dss,ecdsa-sha2-nistp256

设置SSH服务的端口号

Port 22

开启远程登录

PermitRootLogin yes

设置SSH的用户密码

PassWordAuthentication yes

开启SSH的密钥认证

PubkeyAuthentication yes

开启SSH的RSA密钥认证

RSAAuthentication yes

开启SSH的用户验证

UserAuthentication yes

开启SSH的X11转发

X11Forwarding yes

开启SSH的传输数据完整性

Protocol 2

开启SSH的SSH握手协议

KexAlgorithms ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha384,diffie-hellman-group-exchange-sha512,diffie-hellman-group14-sha256,diffie-hellman-group14-sha384,diffie-hellman-group14-sha512,ecdh-sha2-nistp256-cert-v01@openssh.com,ecdh-sha2-nistp384-cert-v01@openssh.com,ecdh-sha2-nistp521-cert-v01@openssh.com,diffie-hellman-group-exchange-sha256-cert-v01@openssh.com,diffie-hellman-group-exchange-sha384-cert-v01@openssh.com,diffie-hellman-group-exchange-sha512-cert-v01@openssh.com,ecdh-sha2-nistp256-cert-v02@openssh.com,ecdh-sha2-nistp384-cert-v02@openssh.com,ecdh-sha2-nistp521-cert-v02@openssh.com,diffie-hellman-group-exchange-sha256-cert-v02@openssh.com,diffie-hellman-group-exchange-sha384-cert-v02@openssh.com,diffie-hellman-group-exchange-sha512-cert-v02@openssh.com,ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v02@openssh.com,ecdh-sha2-nistp256-cert-v01@openssh.com,ecdh-sha2-nistp384-cert-v01@openssh.com,ecdh-sha2-nistp521-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v02@openssh.com,ecdh-sha2-nistp256-cert-v01@openssh.com,ecdh-sha2-nistp384-cert-v01@openssh.com,ecdh-sha2-nistp521-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v02@openssh.com,ecdh-sha2-nistp256-cert-v01@openssh.com,ecdh-sha2-nistp384-cert-v01@openssh.com,ecdh-sha2-nistp521-cert-v01@openssh.com

设置SSH的密钥长度

KeyLength 2048

设置SSH的传输数据完整性

KexAlgorithms ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha384,diffie-hellman-group-exchange-sha512,diffie-hellman-group14-sha256,diffie-hellman-group14-sha384,diffie-hellman-group14-sha512,ecdh-sha2-nistp256-cert-v01@openssh.com,ecdh-sha2-nistp384-cert-v01@openssh.com,ecdh-sha2-nistp521-cert-v01@openssh.com,diffie-hellman-group-exchange-sha256-cert-v01@openssh.com,diffie-hellman-group-exchange-sha384-cert-v01@openssh.com,diffie-hellman-group-exchange-sha512-cert-v01@openssh.com,ecdh-sha2-nistp256-cert-v02@openssh.com,ecdh-sha2-nistp384-cert-v02@openssh.com,ecdh-sha2-nistp521-cert-v02@openssh.com,diffie-hellman-group-exchange-sha256-cert-v02@openssh.com,diffie-hellman-group-exchange-sha384-cert-v02@openssh.com,diffie-hellman-group-exchange-sha512-cert-v02@openssh.com,ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v02@openssh.com,ecdh-sha2-nistp256-cert-v01@openssh.com,ecdh-sha2-nistp384-cert-v01@openssh.com,ecdh-sha2-nistp521-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v02@openssh.com,ecdh-sha2-nistp256-cert-v01@openssh.com,ecdh-sha2-nistp384-cert-v01@openssh.com,ecdh-sha2-nistp521-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v02@openssh.com,ecdh-sha2-nistp256-cert-v01@openssh.com,ecdh-sha2-nistp384-cert-v01@openssh.com,ecdh-sha2-nistp521-cert-v01@openssh.com

设置SSH的认证类型

UserAuthentication yes

设置SSH的认证密码

PasswordAuthentication yes

设置SSH的密钥认证

PubkeyAuthentication yes

设置SSH的RSA密钥认证

RSAAuthentication yes

设置SSH的用户验证

UserAuthentication yes

设置SSH的X11转发

X11Forwarding yes

设置SSH的传输数据完整性

Protocol 2

设置SSH的SSH握手协议

KexAlgorithms ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha384,diffie-hellman-group-exchange-sha512,diffie-hellman-group14-sha256,diffie-hellman-group14-sha384,diffie-hellman-group14-sha512,ecdh-sha2-nistp256-cert-v01@openssh.com,ecdh-sha2-nistp384-cert-v01@openssh.com,ecdh-sha2-nistp521-cert-v01@openssh.com,diffie-hellman-group-exchange-sha256-cert-v01@openssh.com,diffie-hellman-group-exchange-sha384-cert-v01@openssh.com,diffie-hellman-group-exchange-sha512-cert-v01@openssh.com,ecdh-sha2-nistp256-cert-v02@openssh.com,ecdh-sha2-n